Interleaving machine



NOV. 25, 1952 w, BAlLEY 2,619,034

INTERLEAVING MACHINE Filed Aug. 25, 1947 3 Sheetg-Sheet 1 IN VEN TOR.

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Nov. 2 1952 0 2, BAILEY E CHIN TERI EAVING MA I s Shae NOV. 25, 1952 w,BAlLEY 2,619,034

' INTERLEAVING MACHINE Filed Aug. 25. 1947 3 Sheets-Sheet 3ZIIIIIIIII/IIIIIIIIIIIII/I IIIIIVIIIIIIIIIIIIIIIIIIIIIIIIIIIII/IIIIII/bWllH m n ii'r- ||l|Iihi=- IN VEN TOR.

ai/i011 QTIQQNEV Patented Nov. 25, 1952 UNITED STATES PATENT OFFICE INTERLEAVIN G MACHINE Richard W. Bailey, Los Angeles, Calif., assignor toMilo M. Harding, Los Angeles, Calif.

Application Augusti25, 1947, Serial No. 770,410

Claims. (01. 101-3419) This invention relates to a machine for placingsheets of suitable absorbent material between successive, freshlyprinted pages or leaves as they are delivered by a mimeograph, printingpress, or the like, to prevent smearing or blurring, or any transfer ofthe printed matter to the back of the succeeding page.

It is an object of this invention to provide an improved machine forthis purpose.

Such machines are commonly connected for operation by the mimeograph orother duplicatin-g machine in conjunction with which they are intendedto operate. It is another object of this invention to provideinterleaving apparatus having improved means for feeding the slip sheetsin accordance with the delivery of the printed leaves by the mimeograph.

Mimeographs and the like frequently have optionally operable means tocontrol the feeding of the paper which is to receive the printing. It isanother object of this invention to provide an interleaving machinewherein the operation of such control means to prevent feeding of paperto the duplicating machine also causes cessation of delivery of the slipsheets.

It is still another object of this invention to provide an interleavingmachine wherein the delivery of the slip sheets may be stopped,optionally without interfering with the operation pf the associatedmimeograph or duplicator.

In United States Patent No. 1,972,070, issued to E. Jacobson et al. onAugust 28, 1934, for interleaving Machine, feed mechanism is disclosedand claimed for releasing slip sheets one at a time, to drop by gravityin accordance with the-delivery of printed sheets by a duplicatingmachine. It is a still further object of this invention to provideimproved means for operating feed mechanism of this type.

This invention possesses many other advantages and has other objectswhich may be made more easily apparent from a consideration of oneembodiment of the invention. For this purpose there is. shown a form inthe drawings accompanying and forming part of the present specification.This form will now be described in detail, illustrating the generalprinciples of the invention; but it is to be understood that thisdetailed description is not to be taken in a limiting sense since thescope of the invention is best defined by the appended claims.

In the drawings:

Figure 1 is a side elevation showing interleaving apparatus embodyingthe features of the inven tion, connected ,for use with a conventional dupl-i-' eating machine;

Figure. 2,. but showing a diiierentoperating; ppsi -L tion of. theparts;

Figure 7 is a view similar toFigure 6, but show ing. still anotheroperating position of the parts; Figure 8- is a. fragmentary cross.section, taken substantially as indicated by line 8..8 of Figure. 5.;Figure 9 is an elevation of the cam member for operating the mechanismto release theesl-ip sheets; and

Figure 10. is a .developmentot portion oisaid. element, in accordancewith line. llflfllloi.

Figure 9..

Referring to Figures 1 to 4 of the drawings, the slip sheet machine isindicated generally by h -numeral l nd is shown in Figure I. as are.ranged for use. with a convention l mimeoeraphor other duplicatingmachine 2. The machine I comprises a base .3 providing. a flathorizontal $1.11? ac fo the r p io of. th p d pa es from the duplicator2.

A plurality f i ere or s i sheets 4 Qt suitable absorbent material, suchfor example as light cardboard, are supported above the table 3 forrelease successively to drop on each printed page after it has beendelivered by the duplicator 2. I

The group of sheets 4 are maintainedassuch, or in What is known in theart as a book 5, by means of a wire loop 6 on which the sheets arefreely slidable. The handling of the sheets is greatly facilitated inthis way.

-The means for supporting the sheets 5 above the base 3 is substantiallythe same as that shown in the previously mentioned United States Patent-No. 1,972,070, and comprises a column I'll with awidened base portion.Its-a, secured on the base 3. The column 10- extends upwardly from the;

base 3 past one edge of the book 5; and. has an arm H overhanging thebook 51 from which .de; p n s the supporting member 12.. .As clearly:Shownin Fi s. 2, 3.3 and 4,. he member 12 extends through the alignedapertures 4-a provided in the sheets 4 and is provided with a pair ofoppositely projectable fingers l4 and 15 near its lower end, whichsupport the sheets 4.

The fingers I4 and are pivoted on opposite sides of the lower end of alever l8 which in turn is pivotally supported on a pin [1 foroscillating movement in a slot l2-a formed in the member I2. The fingersl4 and I5 have respectively, portions l4-aand l5-a which are adapted toproject from theniember l2 and are provided at their outer ends withbent-over lugs I l-b and -12 to provide increased bearing areas forengaging the sheets 4. It is preferred to have the sheets 4 supported atan inclination as shown in Figure l, the lugs l4-b and 15-!) beingcorrespondingly inclined, as shown in Figure 4.

The fingers l4 and i5 also have respectively, short inner extensionsl4-c and 15-0 engageable by the aligned pins l8 and I9 which areseparated to permit passage of the lever [6 between them.

The arrangement is such that when the lower end of lever I6 is at thelimit of its movement to the left, pin 18 by engagement with the innerend l4-c of the finger l4 maintains the outer end l4-a projected and insheet supporting position. as shown in Figure 2, the other finger I5being in retracted position by having swung downwardly about its pivot.

Similarly, when the lower end of the lever I6 is at the limit of itsmovement to the right, finger I5 is projected into supporting positionand finger I4 is retracted. One of the fingers l4 or I5 is always partlyprojected before the other is fully retracted. In this way, the entiregroup of sheets 4 is prevented from slipping off the member I2 and byproviding alternate sheets 4 with oppositely directed slottedextensions, 44), from the apertures 4-11, only the lowermost sheet willdrop in response to retraction of one finger and projection'of theother. Thus in Figure 2 the slot 4-bin the bottom sheet 4 will pass thefinger I5 as it is projected, allowing the sheet to drop as finger 14 isretracted, but the sheet 4 next above will be supported on the finger 15since the slot 4- b therein extends oppositely from the aperture 4-'a.

The fingers l4 and I5 are adapted to swing upwardly about their pivotalmounting into the slot |2a, to clear the apertures 4-a. Thus the sheets4 may be mounted on the member l2 by moving them upwardly so that themember [2 enters the apertures 4-a. The sheets as they are movedupwardly swing the fingers l4 and I5 to allow free passage of thesheets, the fingers returning to holding position by their weight afterthe sheets have cleared the fingers.

As ameans of oscillating the lever IS, an operating member 22 ispivotally mounted within the arm I!) which is of channel-shaped crosssection. as by a pin 23 intermediate the ends of the member 22. Theupper end of member 22 is connected to the upper end of the lever Is bya pivoted link 24. The lower end of member 22 is slotted, providing apair of opposed convex surfaces 22-a and 22-!) between which isaccommodated the outer portion of a circular plate cam 25 (see Figure2).

As clearly shown in Figures 9 and 10, the outer portion 26 of the cam 25has angularly spaced axially offset cam surfaces 26-12. and 26-h. Thuswhenthe cam 25 is axially restrained and rotated, the successiveengagement of these portions 26-00 and 26-12 with the surfaces 22-11 and4 22-b causes the member 22 to oscillate, in turn oscillating the leverl6, and causing the fingers l4 and 15 to be alternately projected andretracted. Since, as previously explained, the retraction of eitherfinger 14 or l5 releases a sheet 4, the fingers are arranged to beoperated in accordance withthe delivery of the printed pages by theduplicator 2. For this purpose, the cam 25 is arranged to be advanced ina step by step manner by angular increments corresponding to the angularspacing between the cam surfaces 26-a and 26-h, each time that a page isdelivered.

As shown in Figure 2, the cam member 25 is secured on the hub 21 of aratchet wheel 28, the hub 21 being rotatably supported on a headed pin29 suitably secured in the column ID. A light compression spring 38confined between the ratchet wheel 28 and the wall of the column servesto frictionally restrain the assembly 25, 21, 28 against rotation,except when positively urged by means of a pawl member 3| cooperatingwith the ratchet 28, as will be explained shortly.

Referring to Figure 1, the mimeograph 2 is of that type wherein thepages which are to receive the printed matter are fed by means of apaper feed (not shown) operated by a reciprocating bar 35 connected toone arm 36 of a bell crank pivoted at 3'! on the mimeograph frame. Aconnecting rod 38 is connected to the other bell crank arm 39 and isoperated by an eccentric 48 on the shaft 4! of the printing drum 42. Thearrangement is such that each time the drum 42 rotates a printed page isdelivered to the table surface on frame 3.

To advance the cam 25 so that a slip sheet 4 is dropped on the deliveredpage, the pawl member 3| is connected to the bell crank arm 36. To avoidthe necessity of drilling this arm a clamp 43 is provided to which oneend of the member 3| is pivoted at 44 and which may be secured about thearm 36 in adjusted position. As shown in Figure 5, the number of teethon the ratchet wheel 28 corresponds with the number of cam surfaces28-a, 25-21, on the cam member 25. The pawl member 3| carries a pin 3l-aadjacent the ratchet wheel 28, and is urged upwardly about its pivotalsupport 44 by a tension spring 45, so that the pin 3l-a will engage theratchet wheel.

In Figs. 1 and 5, the pawl member 3| is shown at the end of itsadvancing movement. The arrangement is such that operation of the paperfeed mechanism moves member 3! to the left (Figure 5) so that pin iii-acan engage the next tooth on the wheel 28 and is urged into engagementtherewith by the spring 45. Thus the ratchet wheel 28 is rotated bypushing move ment of the member 3|.

In connection with some types of duplicators, it may be necessary tooperate the ratchet wheel 28 by a pulling movement of the member 31, toobtain proper synchronization between delivery of the printed pages andrelease of the slip sheets. This merely requires that the ratchet wheel28 be reversed.

The mimeograph 2 also has a paper control cooperating with the paperfeed and which serves optionally to prevent operation of the paper feedWithout stopping the mimeograph. This paper control is operated by anarm 52 extending rearwardly from a bell crank 41 pivoted at 48 on themimeograph frame, and having an arm 49 carrying a roller 58 urged toengage a cam 5| on the mimeograph drum shaft 4| by a tensio spring 53connected to the arm 52. 7 r

Th be -l crank. also has a dQ tW-ardly' extending arm 54 connected, byan offset rod 55 with an arm 56 of a small bell crank 51 pivotallymounted. on a bracket 58 accommodated in the widened base portion [-11of the column ID. The other arm 59 of the bell crank 51 carries a roller60 adapted to engage the upper surface of the pawl member 3|.

As shown in Figure l, the relation between the eccentric 40 and the cam51 is such that during the advancing movement of the pawl member 3|, thebell cranks.- 41 and 51 are in their upper positions, pin 3l-a. beingurged into engagement with theratchet28 by the spring '45.. On the.return movement, the. bell cranks d! and '5'? are in. their lowerpositions, .and roller 50 acting on the member 31 maintains the. pinSi-a clear of the ratchet 28.

As a means of optionally maintaining the paper control in positionpreventing operation of the paper feed, a conventional spring pressedlatch indicated at 62, is provided in the mimeograph frame formaintaining the arm 52 in its upper position with the bell crank 41 freeof the cam 51. Since in this position the roller 60 by engaging the pawlmember 3l, prevents engagement of the pin 3I-a with the ratchet 28, theslip sheeting mechanism is also prevented from operating.

Means also are provided for optionally preventing operation of the slipsheeting mechanism independently of the operation of the mimeograph 2.Thus an arm 63 is rotatably supported within the column base Ill-a by ashort shaft 64 extending through the side wall of the base. Arm 63carries a roller 65 at its free end adapted upon appropriate movement toengage the pawl member 3| and maintain the pin 3l-a free of the ratchetwheel 28 (see Figure '7) The outer end of the shaft 64 has a knob 56secured thereon for moving arm 63 to a position preventing operation ofthe ratchet wheel 23 or to release the member 3|, permitting operationof the ratchet wheel 28. As shown in Figure 8, the knob 66 may carry aspring pressed ball 61 adapted to engage a suitable depression (notshown) formed in the column wall to maintain the arm 63 in the operationpreventing position of Figure '7.

I claim:

1. In slip sheeting apparatus adapted for cooperation with a duplicatingmachine to place sheets between successive printed pages delivered bythe machine, said machine including optionally operable means forpreventing the feed of pages to be printed, said apparatus comprisingmeans supporting a group of slip sheets and operable to releasesuccessive sheets: means for operating said supporting means to releasesaid sheets, including a rotatable cam having angularly spaced camsurfaces, means including a pawl and ratchet mechanism for advancingsaid cam by angular increments substantially equal to the spacing ofsaid surfaces in accordance with the delivery of said pages, a pivotallymounted arm adapted to engage said pawl and maintain it free of theratchet, and means forming an operating connection between said arm andsaid optionally operable means, whereby operation of said means toprevent feed of pages to be printed operates said arm to pawl engagingposition to prevent operation of said supporting means to release ofsaid sheets.

2. In slip sheeting apparatus adapted for cooperation with a duplicatingmachine to place of pages to be printed, said apparatus. comprisin meanssup orting a group of slip. sheets and operable to release successivevsheets: means. .for operating said supporting means to release. saidsheets, including av rotatable cam having angue larly spaced camsurfaces, means. including a pawl and ratchet mechanism for advancingsaid" cam by angular increments substantially equal'to the spacing ofsaid surfaces in accordance with the delivery of said pages, a pair ofpivotally mounted arms adapted for independent movement to engage saidpawl and maintain it free of the ratchet, one of said arms beingoptionallyoperable to pawl engaging position, and meansforming anoperating connection between the other arm and said optionally operablemeans, whereby operation of said means to prevent feed of pages to beprinted operates said arm to pawl engaging position, either of said armswhen in pawl engaging position, preventing operation of said supportingmeans to release said sheets.

3. In slip sheeting apparatus adapted for cooperation with a duplicatingmachine to place sheets between successive printed pages delivered bythe machine, said machine including optionally operable means forpreventing the feed of pages to be printed, said apparatus comprisingmeans supporting a group of slip sheets, including a pivotally mountedvertical member, and operable to release successive sheets in responseto movement of said member: means for operating said member to causesaid supporting means to release said sheets, including a rotatable camhaving angularly spaced cam surfaces, a ratchet in driving relation withsaid cam, a pivotally mounted pawl member operated by said machine inaccordance with the feed of said pages for advancing said cam by angularincrements substantially equal to the spacing of said surface,resiliently urged about its pivot to engage said ratchet, and meansoperated in response to operation of said optionally operable means toprevent feed of said pages, engaging said pawl and preventing movementthereof into engagement with said ratchet.

4. In a slip sheeting apparatus for use with a duplicating machine toplace sheets between printed pages delivered by the machine, saidmachine including optionally operable control means for preventing thefeed of pages to be printed: a vertical lever rockably mountedintermediate its ends for movement between a pair of limiting positions;means mounted on the lower end of said lever for supporting a group ofslip sheets having apertures through which said lever extends, andoperable upon movement of said lever to either of said limitingpositions to release successive sheets; a second rockably mountedvertical lever spaced from the first mentioned lever and connected inoperating relation therewith by a link; a rotatable cam having angularlyspaced cam surfaces successively engaging said second lever; pawl andratchet mechanism for advancing said cam; and means including an elementmovable in response to operation of said control means preventingfeeding of the pages, preventing engagement of said pawl and ratchet.

5. In a slip sheeting apparatus for use with a duplicating machine toplace sheets between printed pages delivered by the machine, saidmachine including optionally operable control means 7 for preventing thefeed of pages to-be printedi a vertical lever rockably mountedintermediate its ends for movement'between a pair of limiting portions;means mounted on the lower 'end of said lever for supporting a group ofslip sheets having apertures through which said lever extends, andoperable upon movement of said lever to either of said limitingpositions to release successive sheets; a second rockably mountedvertical lever spaced from the first mentioned lever and connected inoperating relation therewith by a link; a rotatable cam having angularlyspaced ca'm'surfaces successively engaging said second lever; pawl andratchet mechanism for advancing said cam; means including an elementmovable in response to operation of said control means preventingfeeding of the pages, preventing engagement of said pawl and ratchet;and op- 8: tionally operable means for preventing engagement of saidpawl and ratchet independently of said element.

RICHARD W. BAILEY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Brasseur May 5, 1942

